mirror of https://github.com/FluuxIO/go-xmpp
Example client with TUI
parent
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1ba2add651
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# Default config for the client
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Server :
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- full_address: "localhost:5222"
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- port: 5222
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Client :
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- name: "testuser2"
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- jid: "testuser2@localhost"
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- pass: "pass123" #Password in a config file yay
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Contacts : "testuser1@localhost;testuser3@localhost"
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module go-xmpp/_examples/xmpp_chat_client
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go 1.13
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require (
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github.com/awesome-gocui/gocui v0.6.1-0.20191115151952-a34ffb055986
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github.com/spf13/pflag v1.0.5
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github.com/spf13/viper v1.6.1
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gosrc.io/xmpp v0.3.1-0.20191212145100-27130d72926b
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)
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package main
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import (
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"fmt"
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"github.com/awesome-gocui/gocui"
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"log"
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)
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const (
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chatLogWindow = "clw"
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inputWindow = "iw"
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menuWindow = "menw"
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)
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func setCurrentViewOnTop(g *gocui.Gui, name string) (*gocui.View, error) {
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if _, err := g.SetCurrentView(name); err != nil {
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return nil, err
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}
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return g.SetViewOnTop(name)
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}
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func layout(g *gocui.Gui) error {
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maxX, maxY := g.Size()
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if v, err := g.SetView(chatLogWindow, maxX/5, 0, maxX-1, 5*maxY/6-1, 0); err != nil {
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if !gocui.IsUnknownView(err) {
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return err
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}
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v.Title = "Chat log"
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v.Wrap = true
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v.Autoscroll = true
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}
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if v, err := g.SetView(menuWindow, 0, 0, maxX/5-1, 5*maxY/6-1, 0); err != nil {
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if !gocui.IsUnknownView(err) {
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return err
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}
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v.Title = "Contacts"
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v.Wrap = true
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v.Autoscroll = true
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}
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if v, err := g.SetView(inputWindow, 0, 5*maxY/6-1, maxX/1-1, maxY-1, 0); err != nil {
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if !gocui.IsUnknownView(err) {
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return err
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}
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v.Title = "Write a message :"
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v.Editable = true
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v.Wrap = true
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if _, err = setCurrentViewOnTop(g, inputWindow); err != nil {
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return err
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}
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}
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return nil
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}
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func quit(g *gocui.Gui, v *gocui.View) error {
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return gocui.ErrQuit
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}
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// Sends an input line from the user to the backend while also printing it in the chatlog window.
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func writeInput(g *gocui.Gui, v *gocui.View) error {
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log, _ := g.View(chatLogWindow)
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for _, line := range v.ViewBufferLines() {
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textChan <- line
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fmt.Fprintln(log, "Me : ", line)
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}
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v.Clear()
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v.EditDeleteToStartOfLine()
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return nil
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}
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func setKeyBindings(g *gocui.Gui) {
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if err := g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, quit); err != nil {
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log.Panicln(err)
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}
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if err := g.SetKeybinding(inputWindow, gocui.KeyEnter, gocui.ModNone, writeInput); err != nil {
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log.Panicln(err)
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}
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if err := g.SetKeybinding(inputWindow, gocui.KeyCtrlSpace, gocui.ModNone, nextView); err != nil {
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log.Panicln(err)
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}
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if err := g.SetKeybinding(menuWindow, gocui.KeyCtrlSpace, gocui.ModNone, nextView); err != nil {
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log.Panicln(err)
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}
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if err := g.SetKeybinding(menuWindow, gocui.KeyArrowDown, gocui.ModNone, cursorDown); err != nil {
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log.Panicln(err)
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}
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if err := g.SetKeybinding(menuWindow, gocui.KeyArrowUp, gocui.ModNone, cursorUp); err != nil {
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log.Panicln(err)
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}
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if err := g.SetKeybinding(menuWindow, gocui.KeyEnter, gocui.ModNone, getLine); err != nil {
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log.Panicln(err)
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}
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}
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// When we select a new correspondent, we change it in the client, and we display a message window confirming the change.
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func getLine(g *gocui.Gui, v *gocui.View) error {
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var l string
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var err error
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_, cy := v.Cursor()
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if l, err = v.Line(cy); err != nil {
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l = ""
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}
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// Updating the current correspondent, back-end side.
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CorrespChan <- l
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// Showing a message to the user, and switching back to input after the new contact is selected.
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message := "Now sending messages to : " + l + " in a private conversation"
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clv, _ := g.View(chatLogWindow)
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fmt.Fprintln(clv, infoFormat+message)
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g.SetCurrentView(inputWindow)
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return nil
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}
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// Changing view between input and "menu" (= basically contacts only right now) when pressing the specific key.
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func nextView(g *gocui.Gui, v *gocui.View) error {
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if v == nil || v.Name() == inputWindow {
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_, err := g.SetCurrentView(menuWindow)
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return err
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}
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_, err := g.SetCurrentView(inputWindow)
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return err
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}
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func cursorDown(g *gocui.Gui, v *gocui.View) error {
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if v != nil {
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cx, cy := v.Cursor()
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// Avoid going below the list of contacts
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cv := g.CurrentView()
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h := cv.LinesHeight()
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if cy+1 >= h-1 {
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return nil
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}
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// Lower cursor
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if err := v.SetCursor(cx, cy+1); err != nil {
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ox, oy := v.Origin()
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if err := v.SetOrigin(ox, oy+1); err != nil {
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return err
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}
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}
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}
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return nil
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}
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func cursorUp(g *gocui.Gui, v *gocui.View) error {
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if v != nil {
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ox, oy := v.Origin()
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cx, cy := v.Cursor()
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if err := v.SetCursor(cx, cy-1); err != nil && oy > 0 {
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if err := v.SetOrigin(ox, oy-1); err != nil {
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return err
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}
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}
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}
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return nil
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}
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